... ring 2.Materials:NBR,CR,Vition,Silicone etc 3.Color:black, white,red, green, brown, etc 4.ozone resistant Seal ring1.Y ... seal ring 2.Materials:NBR,CR,Vition,Silicone etc 3.Color:black ... , white,red, green, brown, etc 4.ozone resistant NameRubber Y Sealing ...